Riveting machine



NOV. 6, 1923.

R. P. RICHARDS RIVETING MACHINE Filed March 13. 1922 fatented Nov. 6,i923.

RUEERT 1. RICHARDS, OF NEWTON-LE-WILLOWS, ENGLAND, ASSIGNOR TO THE VUL-.

CAN FOUNDRY LIMITED, OF NE'WTGN-LE-WILLOWS, LANCASTER, ENGLAND, A

BRITISH COMPANY.

arvn'rrne amounts.

Application filed March 13, 1922. Serial No. 543,353.

To all whom it may concern:

Be it known that I, 'Rurnn'r PEEL RICH-- suns, a subject of'the King ofGreat Britain, residing at Holly House, Newton-le-Willows, in the countyof Lancaster, England, have invented certain new and useful Improvementsin or Relating to Riveting Machines, of which the following is aspecification. V

This invention relates to riveting ma chines of the type in which twoopposed tools are mounted in the opposite ends of a frame, usually ofhorse shoe or U shape. A riveting machine of this type is described forexample in the specification of Patent No. 1,165,851, Gollingwood,December 28, 1915. The chief object of'the present invent-ion 18 toenable the riveter to be used on work where it is diflicult to employmachine riveting by existing machines, as for example in the riveting ofstays in the waist of fireboxes having shaped sides and in otherconditions where the shape of the bodies being riveted prevents theapplication of a simple horse shoe or U shaped riveting machine."

According to this invention one of the opposed tools is displaceable inposition along the frame leg on which it is mounted. This is preferablyeffected by making the leg of variable length by means of a sliding legmember carrying the tool, the opposed tools being, as usual, angularlyadjustable so that they can with the present longitudinal adjustmentoperate through a substantial range of angle independent of the angularadjustment ofthe frame as a whole. Thus in riveting the stays of afirebox with shaped sides the leg of the frame inserted in the fireboxcan be extended to allow the tool carried by this leg to get under thecurve of the side, while without such extension it might in many casesbe impossible to swing the frame to the desired position owing't'o theobstruction offered by the firebox walls.

In order that the said invention may be clearly understood and readilycarried into effect, the same will now be described more fully withreference to the accompanying drawings, in which Figure l is a generalview of a horse shoe shaped riveter embodying this invention and shownapplied to the riveting of a firebox; and

Figure 2 is a detail sectional view showing the'method of securing thetool carrierin an ad ustable manner to one of the legs.

A is the horse shoe or U shaped frame having a continuous leg a at oneside and 'a shortened or broken leg a 0n the other side.

B is the adjustable frame member secured to the leg a to complete it. C,Q arethe tools, the tool C being carried in the end of the leg 61, andthe tool C at the end of the frame member B. D is a suspending ring bwhich the frame is suspended, the shank d of which ring is tapped at theend and mounted on the adjusting screwed rodfd carrying the pulleys (Zover which the chains (Z or other flexible connections pass, allowingthe angle of suspension of the riveter to be adjusted as desired bydisplacing the rod cl relatively to the ring D, as in U frame rlvetersat present in use.

The adjustable frame member B carrying the tool C forms an extensibleleg end, the

said adjustable member. being connected to the leg (4 by the slottedslide 6 guided in the end of the legend having a rack b on its outerface with which gears the pinion E carried in a bracket 6 on the end ofthe leg (4 a small pawl e preventing the pinion running back under theweight of the memberiB. The member is locked in adjusted position by thelocking bolt F and handle f. v

The frame A is made up, as is usual in this construction ofriveter, oftwo plates secured by connecting stays and as shown in the detail view,Figure 2, the slotted slide 6 extends between the two plates at the endof the leg a which plates carry the guiding ribs a for the slide. Theribs a and the grooves b in the opposite faces of the slide 7), whichgrooves receive the ribs. a are preferably made with wedge or slopingsides so that when the locking bolt F is tightened up the wedge surfacesof the ribs and slide grip each other and the slide, with the mem ber Band tool C is held rigidly in the end of the leg M.

The tools C, C are of any known or con enient type and are provided withthe al adjustments, the tools being pivoted in their supporting membersand adjust c angularly around their pivots by the arms a terminating ina worm o with which engages the worm wheel 0 turned by the hand wheel 0so that the tools can be caused to take up any angle desired.

In applying the machine to the work, as shown for example in Figure 1,where the work is in the form of a locomotive firebox G having shapedsides so that the rivet-s g which secure the two walls together arearranged at varying angles and in some cases are in positions where ahorse-shoe riveter With equal legs would not be able to reach, theadjustable leg 64 of the frame is inserted inside the work and frametilted to any angle desired by the known suspension arrangements alreadyreferred to. To get the inner tool C on to the work the extension of theinner leg (1, of the frame is obtained by releasing the slide 6 andoperating the rack of the slide until the tool 0 is brought downsufficiently far to reach the work. Final ad; justment of the tool ismade by angularly adjusting it around its supporting axis or pivot c bythe Worm gearing shown, the outside tool C being correspondinglyadjusted; in angle to obtain the correct setting. It will be seen thatowing to the variable effective length of one of the legs of the frameobtained by means of the additional adjustable member B, riveting can beeffected through a considerable range of angles relatively to the mainaxis of the frame, so that work can be easilv reached which would bequite inaccessible to a riveter of horseshoe type having legs ofconstant length.

\Vhat I claim and desire to secure by Letters Patent of the UnitedStates is 1. In a double tool riveter, a rigid U- shaped frame comprisina pair of tool carrying legs, a separate ad ustable frame menn berforming the terminating portion of one of the said rigid frame legs, aslide on the upper end of the said separate member, a

guide in the end of the corresponding leg, means for adjusting the slidein the guide and for looking it in adjusted position and a pai ofopposed riveting tools one of which is mounted on the said adjustableframe member, for the purpose specified.

In a double tool riv'eter, a rigid U.- shaped frame comprising a pair oftool carryinglegs, a separate adjustable frame member forming theterminating portion of one of the said rigid frame legs, a slide on theupper end of the said separate member,a guide in the end of thecorresponding leg, a toothed rack on one side of the said slide, apinion engaging the rack and adapted to adjust the slide in position inthe guide, a locking bolt adapted to, clamp the slide and guide togetherand a pair of opposed riveting tools one of which is mounted on the saidadjustable frame member, for the purpore specified.

3. In a double tool riveter, a rigid U,- shaped frame comprising a pairof tool can rying legs, a separate adjustable frame member forming theterminating portion. of one,

the saidrigid frame legs, a slide on the said separate member, and anassociated guide in the corresponding leg, which slide and guide memberscomprise a, bevellededged rib extending into, a bevelled edged groove.means for adjusting the slide longitudinally in the guide, a lockingbolt adapt ed to clamp the slide andguide together so that thesaidbevelled edges grip each other and apair of opposed riveting tools oneof which is mounted on the said adjustable framemember, for the purposespecified,

R. P. RICHARDS.

